Latest about gravity
Giant black hole inside a tiny satellite galaxy defies explanation
A tiny galaxy orbiting at the outskirts of the Milky Way appears to have a giant black hole at its center, comparable to that of the much larger Milky Way itself, and scientists don't know why.
What is time dilation?
Time dilation refers to the fact that time passes at different rates for different observers, depending on certain variables.
Why do the planets in the solar system orbit on the same plane?
About 4.5 billion years ago, the solar system was just a giant, spinning cloud of gas and dust. Today, it's flat. Here's how that happened.
Traversable wormholes are possible under certain gravity conditions
Certain weird gravity conditions would make it possible to travel through a wormhole and back.
Why does gravity pull us down and not up?
Here's why the force of gravity pulls us down rather than up. The answer involves Einstein and the bendy realm of space-time.
8 ways life would get weird on a flat Earth
Earth is spherical, but what would happen if the Earth were flat? We explore some of the bizarre implications of a flat world which would make life as we know it virtually impossible.
4 bizarre Stephen Hawking theories that turned out to be right (and 6 we're not sure about)
Some of Hawking's theories revolutionized the way we view the universe, but others still leave scientists scratching their heads.
Neutron star 'mountains' may be blocking our view of mysterious gravitational waves
Scientists have used computer models to predict the size of minuscule deformations, or mountains, on the surfaces of neutron stars, which are responsible for causing gravitational waves as they spin.
